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Computer Science > Programming Languages

Title:
Coinductive Big-Step Semantics for Concurrency

Abstract: In a paper presented at SOS 2010, we developed a framework for big-step
semantics for interactive input-output in combination with divergence, based on
coinductive and mixed inductive-coinductive notions of resumptions, evaluation
and termination-sensitive weak bisimilarity. In contrast to standard
inductively defined big-step semantics, this framework handles divergence
properly; in particular, runs that produce some observable effects and then
diverge, are not "lost". Here we scale this approach for shared-variable
concurrency on a simple example language. We develop the metatheory of our
semantics in a constructive logic.